Joseph White & Son, Conventry & London, Makers to the Admirality, Movement No. 38711, Case No. 38711, 59 mm, 198 g, circa 1909

A heavy, rare deck watch with 6 minute carousel - produced for "D. Norris, Unico Agente para Brazil"
Case: silver, polished, tiered, case maker punch mark "WB", gold hinges. Dial: enamel, radial Roman numerals, auxiliary seconds, blued spade hands. Movm.: 2/3 plate movement, frosted, gilt, chatoned, carousel revolving in 6 minutes, gold screw compensation balance, blued freesprung hairspring, chatoned diamond endstone on balance.

"Carousel" watches
Six-minute carousels are very rare. In fact, the speed of rotation is closer to that of tourbillions than of carousels.
"Carousel" watches are a design by the Danish watchmaker B. Bonniksen, who registered the patent in 1892 in England. His intention was to create a compromise between the "expensive" tourbillon and a normal chronometer - and he actually achieved better results with his carousel than some of the tourbillons.